Shoe upper



FIG. 1 is a front perspective view of a shoe upper showing my new design;

FIG. 2 is a rear perspective view thereof; and,

FIG. 3 is a side view thereof.

The uneven broken line immediately adjacent to the shaded area represents an unclaimed boundary of the design. The unshaded region within the shaded area and the uneven broken line showing of the remainder of the shoe are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a shoe upper, as shown and described. 